Tap Water Quality Report
Tap water quality in Bellingham, Washington
Tap water in Bellingham, Washington receives a grade of D (67/100) from TapWaterSafety.org. It's served by BELLINGHAM-WATER DIVISION CITY OF. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Bellingham's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Bellingham.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 14.4 ppb, 241x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 27.3 ppb, 182x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 12.0 ppb, 120x above the EWG health guideline of 0.1 ppb.
Recommended filters for Bellingham
Filters matched to the specific contaminants in Bellingham's water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in Bellingham's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
14.4 ppb | 0.06 | — | — | — | — | — | 241× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
27.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 182× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
12.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 120× over |
| Trichloroacetic acid Disinfection byproduct |
8.09 ppb | 0.1 | — | — | — | — | — | 81× over |
| Bromodichloromethane Disinfection byproduct |
3.62 ppb | 0.06 | — | — | — | — | — | 60× over |
| Chloroform Disinfection byproduct |
23.5 ppb | 0.4 | — | — | — | — | — | 59× over |
| Dichloroacetic acid Disinfection byproduct |
3.88 ppb | 0.2 | — | — | — | — | — | 19× over |
| Chromium (hexavalent) Heavy metal |
0.0591 ppb | 0.02 | — | — | — | — | — | 3.0× over |
| Dibromochloromethane Disinfection byproduct |
0.168 ppb | 0.1 | — | — | — | — | — | 1.7× over |
| Nitrate Inorganic |
0.168 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.2× over |
| Nitrate and nitrite Inorganic |
0.15 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.1× over |
| Aluminum Heavy metal |
15.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
0.315 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
6.5 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
0.874 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.0532 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Silver Other |
0.467 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from BELLINGHAM-WATER DIVISION CITY OF.